/*
 *@Student 张策
 */
public class no1 {
    public static void main(String[] args) {
        person<String> stringperson = new person<String>("ad");
        stringperson.f("a");

    }
}
class  person<E>{
   private E s;

    public person(E s) {
        this.s = s;
    }
    public E f(E s){
        System.out.println(s.getClass());
        return s;
    }
}
